JPH1023633A - Frame for attaching wiring appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach a wiring appliance to a hollow wall securely by a simple work by a method, wherein screw holes for wiring appliance attaching screws are formed in parts positioned inside the wiring appliance attaching holes of the respective touching pieces of a wiring appliance attaching frame. SOLUTION: If a protective cover 5 is not used, the connection ends of wiring cords, installed in a hollow part, are drawn out through a wiring appliance- attaching hole 3 and let through the opening of a wiring appliance attaching frame 1 and connected to a wiring appliance 4. Then a wiring appliance attaching screw 41, inserted in the screw insertion hole 43 of the attaching frame 45 of the wiring appliance 4, is screwed into the screw hole 15 of the frame 1 for temporary fixing. Then the frame 1 is inserted into the attaching hole 3 from the lower part and the touching pieces 11 and 12 of the frame 1 are provided on the rear side surfaces along a pair of opening ends 31 and 32, and the attaching screw 41 is tightened a little for temporary fixing. Further, an attaching screw 42 is inserted into a screw insertion hole 44 and screwed into a screw hole 16. Then the upper and lower attaching screws 41 and 42 are tightened, to fix the attaching frame 45 to the hollow wall 2. With this constitution, the wiring appliance can be attached securely by a simple work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device mounting frame used for mounting a wiring device such as a switch or an outlet on a wall, particularly a hollow wall.

[0002]

2. Description of the Related Art Conventionally, a wall structure in which a wall material is stretched over a building structural material and the inside of the wall is hollow has been frequently used.

[0003] For example, Japanese Unexamined Utility Model Publication No. Hei 2-133124 and Japanese Unexamined Patent Publication No. Hei 4-4272 disclose mounting means for wiring equipment which can be easily mounted on the hollow wall in a short stroke.
Japanese Unexamined Patent Publication No. 1 (Kokai) No. 1 is known.

As shown in FIG. 14, the mounting means disclosed in these publications has a U-shaped wiring device mounting frame 3a disposed on the back surface of a wiring device mounting hole 2a formed in a hollow wall 1a and the mounting device. The screw 6a for attaching the wiring device attached to the mounting frame 5a to which the wiring device 4a disposed on the surface of the hole 2a is attached is screwed, and the hollow wall 1a is sandwiched between the wiring device mounting frame 3a and the mounting frame 5a. It is fixed by doing.

In this mounting means, since a U-shaped frame is used as a wiring device mounting frame, the wiring device mounting frame 3a itself can be downsized and can be easily inserted into the hollow wall 1a through the mounting hole 2a. And has advantages such as easy handling.

[0006]

However, since the wiring device mounting frame 3a disposed on the back surface of the hollow wall 1a has a U-shape, the wiring device mounting frame 3a is disposed substantially in half around the mounting hole 2a. May be insufficient, and the wiring device mounting frame 3a may be dropped into the hollow wall 1a at the time of mounting or replacement of the wiring device 4a.

Further, since the wiring device mounting frame 3a is U-shaped, the protective cover 7a that covers the entire back surface of the wiring device 4a cannot be mounted on the wiring device mounting frame 3a.

For this reason, the protective cover 7a must be mounted on the mounting frame 5a on which the wiring device 4a is mounted, and when the mounting frame 5a is mounted on the hollow wall 1a, the protective cover 7a hinders the mounting work, and the protection is difficult. There is also a problem that the cord 8a cannot be connected to the wiring device 4a with the cover 7a attached.

The present invention has been made to solve such a problem, and it can be said that the wiring device can be configured with a small number of parts and can be securely mounted on the hollow wall by a simple operation. It is an object of the present invention to provide a wiring device mounting frame which does not need to be dropped into the hollow wall when mounting or replacing the wiring device.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a wiring device mounting frame according to the present invention is provided along a pair of opposed opening ends of a wiring device mounting hole formed in a hollow wall. A pair of abutting pieces respectively abutting on the back side of the hollow wall and a pair of bridging portions connecting both sides of these abutting pieces are formed in a frame shape,
A screw hole for a wiring device mounting screw is formed in a portion of each of the contact pieces located inside the wiring device mounting hole.

Further, in the above-mentioned means, it is more convenient to provide a U-shaped protective cover on the back surface comprising a bottom wall and a pair of side walls erected along both opposing edges of the bottom wall. It can be.

Further, the first engaging portions formed near the bridging portions on the inner edges of the respective abutting pieces constituting the wiring device mounting frame or the both side portions of the respective abutting pieces are bent. A second engaging portion protruding at a position opposite to the first engaging portion at a rear edge of each bridging portion formed along the bent portion is opened at each side wall of the protective cover. By locking the locking claws projecting from both ends of the edge through the insertion grooves formed inside the first engagement portion, the protective cover can be easily and reliably attached and detached.

[0013]

Next, an embodiment of the present invention will be described.

FIG. 1 shows a preferred embodiment of the present invention, in which a wiring device mounting frame 1 includes a pair of wiring device mounting holes 3 formed in a hollow wall 2 which are vertically opposed to each other. A pair of abutting pieces 11 and 12 respectively abutting on the back side of the hollow wall 2 along the open ends 31 and 32 of
And a pair of bridging portions 13 and 14 connecting both sides of the contact pieces 11 and 12 to form a frame.

Further, screw holes 15 and 16 for mounting screws 41 and 42 of the wiring device 4 are formed in portions of the abutting pieces 11 and 12 located inside the wiring device mounting hole 3 respectively.

The protective cover 5 attached to the back side of the wiring device mounting frame 1 is substantially the same as the wiring device mounting hole 3 of the wiring device mounting frame 1 in which the insertion hole 51 of the connection cord 6 is formed at the center. The same type of bottom wall 52 and the bottom wall 5
2 and a pair of side walls 53 and 54 erected along both opposing edges. The side walls 53 and 54 are formed in a U-shape.
Locking claws 532, 533 and 542, 543
Are formed integrally, for example, using a synthetic resin of appropriate thickness having appropriate flexibility and elasticity.

Further, a pair of bridging portions 13, 1 for connecting both sides of the contact pieces 11, 12 of the wiring device mounting frame 1 to each other.
Reference numeral 4 denotes downwards along bent portions 111, 121 and 112, 122 bent from both side portions of each of the contact pieces 11, 12, and an inner portion of each locking claw 532 ( 533, 542, and 543).

Each bridging portion 1 is provided at the inner edge of each of the contact pieces 11 and 12 of the wiring device mounting frame 1.
Locking claws 5 protruding from the protective cover 5 in the vicinity of 3 and 14.
32,533 and 542,543 insertion grooves 113,1
14 and 123, 124 are formed, and locking claws 532, 533 projecting from the protective cover 5 are provided outside the insertion grooves 113, 114 and 123, 124.
First engaging portion 1 for locking the first and second members 542, 543
15, 125 and 116, 126 respectively.

Furthermore, first engaging portions 115, 125 are attached to the edges 131, 141 of the bridge portions 13, 14 in the direction of the back surface.
And hooks 532, 533 and 542, 543 projecting from the protective cover 5 at positions facing the
Second engaging portion 117 having a projection shape for locking the
127, 118, and 128 are protruded, respectively.

Next, a method for mounting a wiring device using the wiring device mounting frame 1 having the above configuration will be described.

FIGS. 2 to 5 show an example of a use method when the wiring device 4 is mounted on the hollow wall 2 using the wiring device mounting frame 1, particularly an example of a usage method when the protective cover 5 is not used. A hollow portion 2 formed first between a structure 21 and a hollow wall 2 as shown in FIG.
The connection end of the wiring cord 7 disposed in the wiring device 2 is taken out from the wiring device mounting hole 3 formed in the hollow wall, and is passed through the opening 17 of the wiring device mounting frame 1 and then connected to the wiring device 4. I do.

Next, the wiring device 4 to which the wiring cord 7 is connected
For example, the wiring device mounting screw 41 inserted into the screw insertion hole 43 located above the mounting frame 45 is screwed into the screw hole 15 located above the wiring device mounting frame 1 and temporarily fixed.

Then, the wiring device mounting frame 1 is inserted from below into the wiring device mounting hole 3, and the contact pieces 11, 12 are opposed to each other in the vertical direction of the hollow wall 2 as shown in FIG. Are arranged on the back side along the open ends 31 and 32, respectively.

Next, as shown in FIG. 4, the wiring device mounting screw 41 is tightened to a certain strength, and the hollow wall 2 is temporarily fixed by sandwiching the hollow wall 2 between the wiring device mounting frame 1 and the mounting frame 45. As shown in FIG. 5, a screw 41 for attaching a wiring device is inserted into a screw insertion hole 44 located below and screwed into a screw hole 15 located above the frame 1 for attaching wiring device. Then, the mounting frame 45 on which the wiring device 4 is mounted is mounted on the hollow wall 2 by screwing the wiring device mounting screws 41 and 42.

As described above, according to the present embodiment, the wiring device 4 can be configured with a small number of components, and can be securely attached to the hollow wall 2 by a simple operation.

As shown in FIG. 6, even if the mounting screws 41, 42 are removed when the wiring device 4 is mounted or replaced, the wiring device mounting frame 1 has the distal end disposed outside the hollow wall 2. Since the wiring cord 7 disposed in the hollow portion 22 with the leading end connected to the removed wiring tool 4 is inserted through the opening 17, the removed wiring tool mounting frame 1 is supported by the wiring code 7. The structure 21
There is no fear of dropping into the hollow portion 22 formed between the inner wall and the hollow wall 2.

FIG. 7 shows an example of the case where the protective cover 5 is attached to the wiring device mounting frame 1 according to the present invention. The locking claws 532, 533 and 542, 543 are shown.
Are respectively engaged with first engaging portions 115, 125 and 116, 126 formed near the bridging portions 13, 14 on the inner edges of the contact pieces 11, 12 of the wiring device mounting frame 1, respectively. It is a thing.

Locking pawls 532, 533 and 542, 54
3, the first engagement portions 115, 125 and 116, 12
6, the side walls 53 and 54 of the protective cover 5 are sandwiched between the fingers and pressed inwardly to bend to bend.
32, 542 and 533, 543 are formed inside the first engagement portions 115, 116 and 125, 126 formed on the inner edges of the respective contact pieces 11, 12 of the wiring device mounting frame 1. Insertion grooves 113, 114 and 123, 1
24 is inserted from the back side into the front side, respectively,
The pressing force is released, and the side walls 53 and 54 are bridged to the bridge portions 13 and 1.
4 and at the same time, the pawls 532, 54
2 and 533, 543 to the first engagement portions 115, 11
6 and 125, 126 respectively.
It can be attached very easily and reliably.

Further, the protective cover 5 attached in this manner can be very easily removed from the wiring device mounting frame 1 by an operation completely reverse to that at the time of mounting.

FIGS. 8 and 9 show the locking claws 532, 533 and 542, 543 of the protective cover 5 in the form of projections protruding from the rear edges 131, 141 of the bridge portions 13, 14. This shows a case where the protective cover 5 is attached to the wiring device mounting frame 1 by engaging with the second engaging portions 117, 127 and 118, 128 respectively.

The method of attaching the protective cover 5 is substantially the same as that of engaging the first engaging portions 115, 125 and 116, 126, except that both side walls 53 and 54 are pressed inwardly to bend. Insert grooves 113, 12
The locking pawls 532, 533 and 542, 543 respectively inserted from the back side into the first, third and 114, 124 are attached to the first
After passing through the engaging portions 115, 125 and 116, 126, the pressing force is released and the side walls 53, 54 are pressed and supported inside the bridge portions 13, 14, and at the same time, the second engaging portions 117, 127 and 118 and 128 respectively.

When the protective cover 5 is engaged with the second engaging portions 117, 118 and 127, 128 in this manner, the first engaging portions 115, 116, and 12 are used.
Since the protective cover 5 can be disposed at the back of the hollow wall 2 as compared with the case where the protective cover 5 is engaged with 5, 126, it is preferable to select and use the protective cover appropriately according to the place of use.

FIGS. 10 to 13 are process diagrams showing the case where the wiring device mounting frame 1 to which the protective cover 5 is mounted is mounted on the hollow wall 2. The wiring device mounting frame 1 is formed between the structure 21 and the hollow wall 2. Wiring cord 7 disposed in the hollow portion 22
Is taken out of the wiring device mounting hole 3 formed in the hollow wall, and is inserted into the insertion hole 51 formed in the center of the bottom wall 52.
Can be easily attached by the same operation as in the case where the protective cover 5 shown in FIGS. 2 to 5 is not used, except that the protective cover 5 shown in FIGS. Play.

In the above-described embodiment, the rear surface side of the hollow wall 2 comes into contact with a pair of opening ends 31 and 32 facing each other in the vertical direction of the wiring device mounting hole 3 formed in the hollow wall 2. Although a case is shown in which the pair of abutting pieces 11 and 12 and a pair of bridging portions 13 and 14 connecting both sides of the abutting pieces 11 and 12 are formed in a frame shape, they are formed in a hollow wall. A pair of abutting pieces that respectively abut against the back side of the hollow wall along a pair of opening ends facing each other in the left-right direction of the wiring device mounting hole, and a pair of bridging portions that connect the upper and lower portions of these abutting pieces. It is needless to say that the present invention can be similarly carried out also in the case of forming a frame shape (not shown).

[0035]

As described above, according to the present invention, the wiring device is arranged on the back surface along the entire periphery of the wiring device mounting hole formed in the hollow wall, and the wiring device can be securely mounted on the hollow wall. At the same time, the configuration in which the screw holes for the wiring device mounting screws are respectively formed in portions of the abutting pieces located inside the wiring device mounting holes allows mounting and removal with extremely simple work.

Also, since the wiring cord is inserted through the entire frame-shaped structure, the hollow portion formed between the hollow wall and the building at the time of installation and replacement of wiring equipment is used. There is no need to worry about falling.

Further, according to the present invention, since the U-shaped protective cover can be provided on the back side, the protective cover is hindered when the wiring device is mounted on a hollow wall as in the case where the protective cover is provided on the wiring device. There is no problem that the wiring cord cannot be connected when the protective cover is attached and the wiring cord cannot be connected when the protective cover is attached.

Further, locking claws protruding from both ends of the open end of each side wall of the protective cover are provided near the respective bridging portions of the inner edges of the abutting pieces constituting the wiring device mounting frame. 1 at the position facing the first engaging portion at the back edge of each bridging portion formed along the bent portion bent from both sides of the engaging portion or each contact piece. The protection cover can be easily and reliably attached and detached by changing the attachment depth by engaging with the projecting second engagement portions.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a construction state showing one of preferred embodiments of the present invention.

FIG. 2 is an explanatory diagram showing a construction state when a protective cover is not used in the embodiment shown in FIG. 1;

FIG. 3 is an explanatory view showing a construction state when a protective cover is not used in the embodiment shown in FIG. 1;

FIG. 4 is an explanatory diagram showing a construction state in the case where the protective cover in the embodiment shown in FIG. 1 is not used.

FIG. 5 is an explanatory diagram showing a construction state in the case where the protective cover in the embodiment shown in FIG. 1 is not used.

FIG. 6 is an explanatory diagram showing a construction state in the case where the protective cover in the embodiment shown in FIG. 1 is not used.

FIG. 7 is a perspective view showing a state in which the protective cover according to the embodiment shown in FIG. 1 is provided.

FIG. 8 is a perspective view showing a state in which protective covers in the embodiment shown in FIG. 1 are provided at different positions.

FIG. 9 is a side view showing a state where a part of FIG. 8 is cut off;

FIG. 10 is an explanatory diagram showing a construction state when the protective cover according to the embodiment shown in FIG. 1 is provided.

FIG. 11 is an explanatory diagram showing a construction state when the protective cover according to the embodiment shown in FIG. 1 is provided.

FIG. 12 is an explanatory diagram showing a construction state when the protective cover according to the embodiment shown in FIG. 1 is provided.

FIG. 13 is an explanatory diagram showing a construction state when the protective cover according to the embodiment shown in FIG. 1 is provided.

FIG. 14 is an explanatory view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wiring installation frame, 2 ... Hollow hole, 3 ... Wiring installation hole, 5 ... Protective cover, 11 ... Contact piece, 12 ... Contact piece, 13 ... Bridge part, 14 ... Bridge part, 15 ... Screw Hole, 16
... Screw hole, 31 ... Open end, 32 ... Open end, 41 ... Wiring fixture mounting screw, 42 ... Wiring fixture mounting screw, 52 ... Bottom wall, 53 ... Side wall, 54 ... Side wall, 115, 116, 12
5, 126 ... first engagement portions, 117, 118, 127,
128: second engaging portion, 531: open edge, 541: open edge, 532, 533, 542, 543: locking claw.

Claims (4)

[Claims] 1. A pair of abutting pieces respectively abutting on a back side of a hollow wall along a pair of opposed opening ends of a wiring device mounting hole formed in a hollow wall, and both sides of the abutting pieces. Are formed in a frame shape by a pair of bridging portions that connect the wiring device, and screw holes of wiring device mounting screws are respectively formed in portions of the abutting pieces located inside the wiring device mounting hole. A wiring device mounting frame, characterized in that: 2. The wiring device according to claim 1, wherein an end face U-shaped protective cover comprising a bottom wall and a pair of side walls erected along both opposing edges of the bottom wall is attached to the back side. Mounting frame. 3. A locking claw protruding at both ends of an open edge of each side wall of the protective cover near an inner edge of each abutting piece of each of the abutting pieces constituting the wiring device mounting frame. 3. The wiring device mounting frame according to claim 2, wherein an insertion groove and a first engagement portion of the locking claw are formed at positions outside the insertion groove. 4. Each of the bridging portions is formed along a bent portion bent from both side portions of each of the abutting pieces, and a rear edge of the bridging portion is opposed to the first engaging portion. 4. The wiring device mounting frame according to claim 3, wherein the second engaging portions of the locking claws protruding from the protective cover are provided at positions. 4.